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approach and landing operations using instrument approach procedures Betonungen
Luftf.	заходы на посадку и посадки с использованием схем захода на посадку по приборам
Englisch Thesaurus
approach and landing operations using instrument approach procedures
Luftf.	Instrument approach and landing operations are classified as follows: Non-precision approach and landing operations. An instrument approach and landing which utilizes lateral guidance but does not utilize vertical guidance. Approach and landing operations with vertical guidance. An instrument approach and landing which utilizes lateral and vertical guidance but does not meet the requirements established for precision approach and landing operations. Precision approach and landing operations. An instrument approach and landing using precision lateral and vertical guidance with minima as determined by the category of operation. Note.— Lateral and vertical guidance refers to the guidance provided either by: 1. a ground-based navigation aid; or 2. computer generated navigation data. Categories of precision approach and landing operations: Category I CAT I operation. A precision instrument approach and landing with a decision height not lower than 60 m 200 ft and with either a visibility not less than 800 m or a runway visual range not less than 550 m. Category II CAT II operation. A precision instrument approach and landing with a decision height lower than 60 m 200 ft, but not lower than 30 m 100 ft, and a runway visual range not less than 350 m. Category IIIA CAT IIIA operation. A precision instrument approach and landing with: 1. a decision height lower than 30 m 100 ft or no decision height; and 2. a runway visual range not less than 200 m. Category IIIB CAT IIIB operation. A precision instrument approach and landing with: 1. a decision height lower than 15 m 50 ft or no decision height; and 2. a runway visual range less than 200 m but not less than 50 m. Category IIIC CAT IIIC operation. A precision instrument approach and landing with no decision height and no runway visual range limitations. Note.— Where decision height DH and runway visual range RVR fall into different categories of operation, the instrument approach and landing operation would be conducted in accordance with the requirements of the most demanding category e.g. an operation with a DH in the range of CAT IIIA but with an RVR in the range of CAT IIIB would be considered a CAT IIIB operation or an operation with a DH in the range of CAT II but with an RVR in the range of CAT I would be considered a CAT II operation.